Picker-check for looms.



w. M. BMBBR.v Hom 05H01: Fon Looms.

APPLIOATION PILBDBEPT. 20, 1910.

Patented 'Jan A10, 1,911.L

UNITED sTATEs'PATENT oFnioE.

WILLIAM M. BARBER, 0F PHENIX, RHODE ISLAND, VASSIGNOR TO DRAPER COMPANY,OF HOPEDALEVMASSACI-IUSETTS, A CORPORATION OF MAINE.

PICKER-CHECK FOR LOOMS.

Specification of Letters Patent.

Application filed September 20, 1910. Serial No. 532,837.

To all whom it may concern:

Be it known that I, WILLIAM M. BARBER, a citizen of the United States,and resident of Phenix, county of Kent, State of Rhode Island, haveinvented an Improvement in Picker-Checks for Looms, of which thefollowing description, in connection with the accompanying drawing, ,isa speoiication, like characters on the drawing representing like parts.j

This invention has for its object the production of simple and efficientmeans to check the movement of the picker in a loom, the checking meansbeing so constructed and arranged that it coperates with thepicker-stick as it approaches each end of its stroke and by frictionalengagement stops it at the proper point without undue wear or shock.

The checking means is located beneath the l lay and as it in no wayinterferes with the 7 traversing the slot in the lay behind thelejection of a spent bobbin in automatic fillmg-replenishing looms of theNorthrop type it is well adapted for use in connection therewith, but myinvention is not by any means restricted to such use.

Herein I have illustrated one practical embodiment of my invention inconnection with the lay of a Northrop loom at the replenishing sidethereof, such a loom, for instance, as is shown in United States PatentNo. 529,940 granted to Northrop November 27, 1894.

The checking action upon the pickerstick can be readily adjusted to anydesired degree, as will appear hereinafter.

The novel features of my invention will be fully described in thesubjoined specification and particularly pointed out in the followingclaims.

Figure 1 is a front elevation of t-he lay of an automaticilling-replenishing loom at the replenishing side thereof, with oneembodiment of my invention applied thereto; Fig. 2 is a top plan view ofthe checking means detached from the loom, the pickerstick being shownin section; Fig. 3 is a transverse section on t-he line 3 3, Fig. 1,looking tow'ard the left.

The longitudinally-slotted lay 1 and its race-plate 2, the front andback plates 3, 4 of the shuttle-box, the cover-plate 5, and binder 6,Fig. 1, may be and are all of usual or well known construction, thepicker-stick front guide 8 which latter is bolted at 9 to the lay, thedefiecting plate or guide 10 for the spent bobbin being located at theinner end of the front guide 8, as usual. Said front guideis providedwith a frontwardly extended, slotted ear 11 which herein forms One-ofthe supports for the picker check, the .other support being shown inFig. 3 as a bracket 12 bolted to the back of the lay behind said ear 11.Upon each of said supports I bolt a plate 13, which in practice issubstantially horizontal and eX- tended outward toward the loom side,the inner end of each plate having formed upon or secured to it adownturned tubular boss 14, through which extends a headed fulcrum stud15. The fulcra 15 are parallel and opposite to each other, and extendthrough apertured lateral ears 16 in the checking members, shown clearlyin plan view', Fig. 2, each member presenting oppositely extended innerand outer arms 17,18, the latter being somewhat longer, and the flat andsmooth inner faces of each pair of the arms are at an obtuse angle `toeach other. When the two members are in operative position in front andbehind the path of the picker-stick the arms 17 converge, as do also thearms 18 at the outer side of the fulcra 15.

The checking members are conveniently made of metal, and aresubstantially rigid inherently, but they can swing laterally about theirfulcra and when so swung their outer ends will approachwhen their innerends are. separated, and vice versa, such separation being effected bythe intervening picker-stick 7 as shown in Fig. 2.

Referring to Figs. 1 and 3 the ears 16 of the checking members abutagainst the lower ends of the bosses 14, and a spring 19 is interposedbetween each ear and checknuts 20 screwed onto the lower end of thefulcrum stud, to maintain the ear 16 of a checking member in frictionalengagement withV the adjacent boss 14. The more the spring is compressedby setting up the corresponding check-nuts the harder will the ear bepressed against the boss, and consequent-ly the greater will be thefrictional resistance offered tov any lateral swinging movement-ofachecking member about its fulorum stud. I prefer to interpose washers21, 22 between the ends of the spring and the adjacent parts, to wit,the ear 16 ,ferned by the friction means described, de-

and the check-nuts. The checking members j 2. In a loom, in combination,a lay longi- `are spaced apart to properly coperate with thepicker-stick as it nears each end of its stroke, and to be pressed apartas the stick completes its stroke, the resistance to the lateral swingof the checking members, govtermiiiing t-he amount of check exerted uponthe picker-stick. Such resistance can be readily increased ordiminished, according to the requirements of the particular loom towhich the checking means is applied. Supposing the picker-stickseparates the arms 18 on its outward stroke then the arms 17 will bemoved toward each other, as in Fig. 2, and' when the stick moves inwardit willimpinge upon and separate the said' arms V17, and in so doingwill be checked, but at the'same time the outer Aarms 18 .are movedtoward each other 'and reset for"coperation with and checking of the'picker-stick on its next outward stroke.

Thus the checking members are double-acting and the picker-stick oneither stroke sets the checking members to coperate properly therewithon its next stroke. The

youter arms 18 'are made somewhat longer than'the inner arms 17 in orderto properly locate the imlpingingy portions of both sets of armswithrelation to the picker-stick as it swings inwardy and outward. Inasmuchas there is little wear between smooth metal faces and wood there isinsignicant wear upon the picker-stick due to the cooperation therewithlof the checking members, and as ,the friction devices are always actingupon suchmembersithe'latter remain in any given angular positionrelative to their rfulcra until positively moved therefrom by impact ofthe picker-stick thereon.

Various changes or modications in details of construction andarrangement may be made by those skilled in the art without departingfrom the spirit and scope of my invention as set forth in the claimsannexe? hereto.

`tudinally slotted for the picker-stick, said picker-stick, and checkingmeans therefor comprising oppositely positioned checking membersfulcruined between their ends and converging toward their outer andinner ends, to' frictionally engage the picker-stick on its outward andinward strokes, respec` tively, the picker-stick traveling between said;members, fulcra for the vlatterfixedly con-v nected with the lay andupon which the` members swing laterally when impingedE upon by thepicker-stick, an'd means to resist such lateral movementof the checkingmembers and thereby bring the picker-stick to rest at each end of itstravel.

tudinally slotted for the picker-stick, said picker-stick, and checkingmeans therefor comprising elongated members fulcruined between theirextremities at the front and rear of the path of the picker-stick andconverging toward their inner and louter ends, engagement with l thepicker-stick on either stroke acting to separate laterally the adjacentends of the checking members and cause their other ends to approach eachother, fulcra for said members, fxedly connected with the lay and uponwhich the members swing laterally, and yielding means to resist such"lateral movement and thereby cause said members to check the movement ofthe picker-stick at each end of its travel.

3. The combination with the lay of a loom, and a picker-stick, ofchecking means comprising opposed checking members to cooperate with andcheck the picker-stick at each end of its stroke, fiilcra carried by thelay and upon which said members are mounted between their'inner andouter ends to swing laterally, and friction devices acting upon thechecking members adjacent their fulcra to resist lateral movementthereof due to engagement with the picker-stick at either the inner orthe outer ends of said members.

4. The combination with the lay of a loom, and a picker-stick, ofchecking means comprisinV inherently rigid checking members pivott` thepicker-stick path, the opposite faces of said members converging fromtheir fulcra to their extremities, fulcra fixedly connected with the layand upon which said checking members are adapted to swing laterally, theengagement of the picker-stick by said members near one end sett-ing theopposite end thereof to coperate with and check the picker-stick on itsnext stroke, and adjustable friction controlling means to regulate theresistance of said members to swinging movement when engaged by thepicker-stick. `Having fully described my invention, what 5. Thecombination with the lay of a loom,

' and a picker-stick, of checking means comvprisingopposed checkingmembers to cooperate. with and check the picker-stick at each end of itsstroke, fulcra carried by the lay and upon which saidmembers are mountedto swing laterally, andI friction dcvices acting upon the checkingmembers to resist lateral movement thereof due to engagement with thepicker-stick, each device comprising a fixed contact surface and acooperating surface on the checking member,

j a spring to yieldingly press said surfaces together, and means to varythe action of the spring thereupon.

6. The combination with the lay of a loom,

and a picker-stick, of checking members mountedfopposite each other atthe front and rear, respectively, of the path ofthe pickerstick, afulcrum xedly connected with the lay and upon which one of said membersis mounted substantially midway between its ends and adapted to swinglaterally, the opposed impact faces of said members converging towardtheir extremities adjacent the inner and outer ends of the stroke of thepicker-stick, whereby the engagement of the picker-stick with saidmembers near either the inner or the outer extremity thereof swings thefulcrumed member and causes the opposite extremities of said members totwo subscribing witnesses.

WILLIAM M. BARBER.

Witnesses:

FRED M. HUToHINsoN, JOHN C. EDWARDS.

